Bray High Performance Butterfly Valve McCannalok Cryogenic Owner's manual

Brand: Bray

Model: High Performance Butterfly Valve McCannalok Cryogenic

Category: Motor vehicle accessories & components

Type: Owner's manual

Bray High Performance Butterfly Valve McCannalok Cryogenic is a valve especially designed to handle the most difficult media in today's industrial environments, like liquid oxygen, liquid natural gas, and other cryogenic liquids.

This valve provides industry leading cryogenic sealing technology and performance with tight shutoff provided throughout a wide range of operating conditions. It is suitable for both modulating and on/off services and can be easily automated with your choice of manual operators, electric and pneumatic actuators, positioners, and controls.

The McCannalok Cryogenic butterfly valve is produced to the highest quality standards and is designed to be mounted between ANSI flanges. It features an eccentric design that may allow line pressure to open the valve if the handle/actuator is not in place while the valve is under pressure. Therefore, it is important to not pressurize the line without a handle or actuator on the valve.

McCANNALOK SERIES

CRYOGENIC HIGH PERFORMANCE

BUTTERFLY VALVES

Installation, Operation and Maintenance Manual

BRAY.COM THE HIGH PERFORMANCE COMPANY

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

2 of 18

1.0 Deﬁnition of Terms 3

2.0 Introduction 3

3.0 Parts Diagram 4

4.0 Handling Requirements 5

5.0 Long Term Storage 6

6.0 Installation 7

7.0 Maintenance 8

8.0 Stem Seal Replacement 9

9.0 Seat Replacement 11

10.0 Disc and Stem Replacement 12

11.0 Field Adjustments 15

12.0 Appendix A — Tables 16

TABLE OF CONTENTS

For information on this product and other Bray products, please visit BRAY.COM

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

3 of 18

READ AND FOLLOW THESE INSTRUCTIONS CAREFULLY.

SAVE THIS MANUAL FOR LATER USE.

1.0 DEFINITION OF TERMS

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in

death or injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in

injury.

NOTICE

Used without the safety alert symbol, indicates a potential situation which, if not

avoided, may result in an undesirable result or state, including property damage.

2.0 INTRODUCTION

2.1 The McCannalok Cryogenic high performance butterfly valve provides

industry leading cryogenic sealing technology and performance while

being produced to the highest quality standards. The valve is designed

to handle the most difficult medias in today's industrial environments,

liquid oxygen, liquid natural gas, and other cryogenic liquids.

2.2 Features Include:

2.2.1 Tight shutoff provided throughout a wide range of operating conditions.

2.2.2 Suitable for both modulating and on/off services, the McCannalok

Cryogenic butterfly valve is easily automated with your choice of manual

operators, electric and pneumatic actuators, positioners, and controls.

2.3 For additional information about McCannalok Cryogenic butterfly

valves — including application data, engineering specifications and

actuator selection, visit www.bray.com or contact your Bray distributor

or sales representative.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

4 of 18

3.0 PARTS DIAGRAM — MCCANNALOK CRYOGENIC VALVE

ITEM

NO. DESCRIPTION

1Body

2Disc

3Stem

5Seat Retainer

6Locating Plug

7A Gasket (Locating Plug)

7B Gasket (Bonnet)

8A Upper Body Bearing

8B Lower Body Bearing

8C Bonnet Bearing

9Disc Spacer

12 Thrust Washer

13 Stem Seal Set

14 Grounding Washer

15 Stud

16 Gland Ring

17 Retaining Ring

18 Gland Retainer

19 Lock Washer

20 Hex Nut

21 Mounting Bracket

22 Socket Head Cap Screw

23 Taper Pin

24 Lock Washer

25 Socket Head Cap Screw

27 Seat Retainer Gasket

32 Seat

33 Bonnet

34 Socket Head Cap Screw

35 Lock Washer

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

5 of 18

4.0 HANDLING REQUIREMENTS

4.1 Packed Valves

4.1.1 Crates: Lifting and handling of the packed valves in crates shall be

carried out by a fork lift truck, by means of the appropriate fork hitches.

4.1.2 Cases: The lifting of packed valves in cases shall be carried out in

the lifting points and in the center of gravity position which has been

marked. The transportation of all packed material must be carried out

safely and following the local safety regulations.

4.2 Unpacked Valves

4.2.1 Lifting and handling of valves should be carried out by using

appropriate means and observing the carrying limits. Handling must

be carried out on pallets, protecting all machined surfaces to avoid any

damage.

4.2.2 With large bore valves, rigging the load must be carried out by using

the appropriate tools to prevent the valve from falling or moving during

the lifting and handling.

CAUTION

For valve handling and/or lifting, the lifting equipment (fasteners, hooks, etc.)

must be sized and selected while taking into account the valve weight indicated

in our packing list and/or delivery note. Lifting and handling must be made only

by qualified personnel.

Fasteners must be protected by plastic covers in sharp corner areas.

Caution must be taken during the handling to avoid this equipment passing

over workers or over any other place where a possible fall could cause injury or

damage. In any case, local safety regulations must be respected

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

6 of 18

5.0 LONG TERM STORAGE

5.1 McCannalok Cryogenic valves are cleaned and double bagged to form

a vapor barrier with desiccant bags to prevent moisture from collecting

on the valve. If the valves are to be stored before installation, storage

must be carried out in a controlled manner as follows:

5.1.1 Valves must be stored in a closed, clean and dry environment.

5.1.2 Valve disc to be in closed position and the body end faces must be

covered with appropriate flange protection. Flange protectors should

only be removed at the time of installation.

5.1.3 If the valve is automated for fail open service, the valve shall be

carefully protected to ensure there is no damage to the sealing

surfaces.

5.1.4 Valves should be stored indoors with a preferred temperature range

from 40°F (4°C) to 85°F (29°C).

5.1.5 The valves should be checked every three months to ensure the above

conditions are maintained.

5.1.6 If the valve vapor barrier bags are broken or compromised in any way,

valve shall be evaluated to determine if cleaning is necessary. Any dirt

or debris can prevent the valve from functioning properly.

WARNING

If valve is for oxygen service and the vapor barrier bags are compromised, the

valve must be disassembled and re-cleaned using approved oxygen cleaning

procedures before installation.

5.2 These are general guidelines for valve storage. Please consult the

factory for information regarding specific requirements.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

7 of 18

6.0 INSTALLATION

6.1 The McCannalok Cryogenic valve is designed to be mounted between

ANSI flanges. When the valve is open, the disc will extend into the pipe

on both sides of the valve (the disc extends further on the body side

than the seat retainer side of the valve). Piping must be large enough to

allow the disc to clear the pipe.

6.2 In general, Class 150 valves will clear Schedule 40 pipe, and Class 300

valves will clear Schedule 80 pipe adequately.

CAUTION

If handle or actuator has been removed do not rotate disc beyond full open or

closed position — this could cause damage to sealing surfaces.

6.3 NOTE: McCannalok valves are equipped with travel limiters to prevent

over closure. The valve is opened by turning counterclockwise, closed

by turning clockwise. The double “D” flats or keyway at the top of the

stem is parallel to the disc edge.

CAUTION

Verify and check the preferred flow direction prior to installation.

6.4 The McCannalok Cryogenic valve’s installation orientation is with the

seat retainer downstream. This will enable positive shutoff and a long

service life.

6.5 Ensure the disc (2) is in the closed position then carefully center the

valve between flanges. The valve guide holes (wafer pattern valve) or

tapped holes (lug pattern valve) should be used to align the valve with

the mating flanges.

6.6 Use flange gasket manufacturer’s recommended torques when bolting

valve into the line.

6.7 Gaskets should conform to the requirements of API Standard 601,

Edition 3 for ASME/ANSI B16.5 class flanges. Spiral wound gaskets,

such as Flexitallic CGl series, conforming to ASME/ANSI B16.20 are

acceptable.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

8 of 18

7.0 MAINTENANCE

7.1 Reasonable precautions should be taken before beginning work on the

valve. Protective clothing, as required by the specific line fluid, should

be worn. If the valve was removed from cryogenic service, allow plenty

of time for it to warm up to a safe temperature.

WARNING

Before removing handle or the actuator from the valve, or before removing seat

retainer from a valve in dead end service, close the valve and depressurize the line.

7.2 The eccentric design of the McCannalok valve may allow line pressure

to open the valve if the handle/actuator is not in place while the valve is

under pressure.

WARNING

Do not pressurize the line without a handle or actuator on the valve.

7.3 The McCannalok valve must be in the closed position to be removed

from the line.

7.4 Begin all work on a valve that has been removed from service by

cleaning the valve, removing any grit or scale.

CAUTION

When handling the valve, care should be taken not to scratch the disc edge or seat.

7.5 Replacement seats, seals and other parts are available from authorized

distributors. Contact your distributor or sales representative for details

of price and delivery.

WARNING

Verify if the valves are required to be cleaned for oxygen service. Depending on

the application, the valves may need to be cleaned and assembled at a qualified

oxygen cleaning facility.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

9 of 18

8.0 STEM SEAL REPLACEMENT

8.1 Refer to McCannalok Cryogenic parts diagram for parts identification.

NOTICE

Note actuation assembly position before removal.

8.2 For handle operated valves, remove handle assembly. Remove socket

head cap screws (25) and lock washers (24). Remove mounting bracket

(21). For actuated valves, unbolt mounting bracket (21) from bonnet

(33) and lift actuator assembly off stem (3).

8.3 Remove gland retainer nuts (20) and lock washers (19). Remove gland

retainer (18) anti-blowout retaining ring or split ring (17) (depending on

size), gland ring (16), and grounding washer (14).

CAUTION

When removing stem seals, care should be taken not to scratch stem (3) or

packing box bore.

8.4 Remove stem seals (13).

8.5 Do not remove thrust washer (12), unless further valve disassembly is

required.

8.6 Examine body packing box bore and stem (3), clean as necessary to

remove any corrosion or foreign matter before installing new seals.

8.7 Install new seals (13) in packing box one at a time. Stagger seal ring

joints 180° apart when installing. Tamp each ring to bottom before

installing next ring. Table 3 shows the correct number of stem seals to

install in each valve.

NOTICE

On the larger valves it will be necessary to compress each seal before adding the

next.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

10 of 18

8.8 Install grounding washer (14) on top of the stem seals (13) with the tines

facing down.

8.9 Slide gland ring (16) over stem (3) on top of grounding washer (14).

Install anti-blowout retaining ring or split ring (17) (depending on valve

size). Slide gland retainer (18) over stem (3) and onto gland studs (15).

Place lock washers (19) and hex nuts (20) on studs (15) and tighten

finger tight.

8.10 Remount actuator assembly with lock washers (24) and mounting

bracket cap screws (25). Tighten mounting bracket cap screws (25) to

the correct torque per Table 6. If required, remount handle assembly.

Ensure handle or actuator is mounted in the original orientation.

8.11 Operate valve open and closed several times to check for binding and

to set the stem seals. Loosen gland nuts (20) and retighten to torque

value given in Table 4 .

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

11 of 18

9.0 SEAT REPLACEMENT

9.1 Refer to McCannalok Cryogenic parts diagram for parts identification.

With the disc (2) in the closed position, remove the valve from service.

9.2 Lay the valve down with the disc (2) in the closed position and the seat

retainer (5) side facing up.

9.3 Remove the socket head cap screws (22), the seat retainer (5), seat

retainer gasket (27) and seat (32).

9.4 Carefully clean the seat (32) area in the body (1) and seat retainer (5).

Remove foreign matter, dirt, oil, etc. Check disc seating area for nicks or

scratches.

9.5 With the disc (2) in the CLOSED position, place the new seat (32) on

disc (2), carefully centering it on the disc (2).

9.6 Install the new seat retainer gasket (27) centered onto the body (1).

9.7 Align the holes in the seat retainer (5) with matching holes in body (1)

and carefully place in position on top of seat (32). Make sure that the

seat (32) remains centered on the disc (2) and the seat retainer gasket

(22) remains centered on the body (1) when positioning seat retainer

(5). The seat retainer bolt counterbores must be facing away from the

face of the body.

CAUTION

Do not shift the retainer in order to align holes. It may shift the seat or seat

retainer gasket from its correct position.

9.9 Apply to the thread of the socket head cap screws GPL225 Krytox

PTFE thread lubricant.

9.9.1 Install the socket head cap screws (22) finger tight to the body (1)

through the seat retainer counter bores.

9.9.2 Tighten the cap screws (22) to approximately 30% of the torque value

listed in Table 4 in a crisscross pattern.

9.9.3 Repeat Step 2, increasing the torque value to approximately 60% of the

final torque value.

9.9.4 Repeat Step 3, increasing the torque value to the final required torque

value.

9.9.5 Open the disc (2). Re-torque all cap screws (22) to the final required

torque value.

9.10 A final tightening should be checked prior to installation. Operate valve

several times and examine seat for any damage before reinstalling the

valve in service.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

12 of 18

10.0 DISC AND STEM REPLACEMENT

10.1 Refer to McCannalok Cryogenic parts diagram for parts identification.

NOTICE

Stem (3) and disc (2) are supplied as a matched set with taper pins (23) and are

to be replaced as a set.

10.2 For handle-operated valves remove handle assembly. Remove socket

head cap screws (25) and lock washers (24). Remove mounting bracket

(21). For actuated valves, unbolt mounting bracket (21) from bonnet

(33) and lift actuator assembly off stem (3).

NOTICE

Note actuation assembly position before removal.

10.3 Remove gland retainer nuts (20) and lock washers (19). Remove gland

retainer (18), anti-blowout retaining ring or split ring (17) (depending on

valve size), gland ring (16), and grounding washer (14).

10.4 Remove stem seals (13).

CAUTION

Take care not to scratch stem (3) or body packing box bore.

10.5 Remove locating plug (6) and gasket (7A).

10.6 Remove cap screws (22), seat retainer (5),seat retainer gasket (27) and

seat (32).

10.7 Turn disc (2) to the full open position and drill out tack welds on large

end of taper pins (23).

CAUTION

Take care to support valve so that disc (2) surfaces are not damaged.

10.8 Drill sizes to remove tack welds as given in Table 5. Use center-punch to

dimple center of tack welds prior to drilling.

10.9 Place valve in horizontal position, with flat face of disc (2) up. Support

disc (2) and body (1) on wooden blocks to protect disc (2) and body (1)

surfaces. Disc (2) will rest in partially open position.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

13 of 18

10.10 Knock out taper pins (23) using a rod or punch on small end of pin

(opposite tack weld). It may be necessary to lift body (1) and rotate

disc (2) slightly to do this. Make sure disc (2) is resting on wood blocks

since it will swing freely on stem (3) with pins removed. When taper

pins (23) are out, lay body (1) down so disc (2) and body (1) are evenly

supported on flat surface.

10.11 Using a brass bar or drift punch, knock stem (3) loose from bottom of

valve and pull from bonnet (33). After long or severe service this may

take considerable force.

CAUTION

Be careful not to damage bearings (8), disc spacers (9), body (1) or bonnet (33).

10.12 Disc spacers (9) are used at top and bottom of disc (2) to properly

position disc (2) in body (1). Proper spacers were selected at initial

assembly and rarely require replacement. The location of these spacers

should be noted, and the spacers marked at disassembly so that they

are reinstalled in the same positions, top and bottom.

10.13 Separate body (1) from disc (2), and remove thrust washer (12) from

packing bore.

10.14 Examine body bearings (8A/8B) for excessive wear. Two body bearings

are located in the body (1) near the disc spacers (9), one stem bearing

is located in the bonnet (33) below the thrust washer (12). If removed

from body (1) or bonnet (33), note position of stem bearing and mark

to reinstall in same location. If bearing liner is worn through to the shell,

or if severe damage is evident on the bearing, it should be replaced.

Replacement is rarely needed.

10.15 Clean body (1) and bonnet (33) thoroughly to remove all dirt, foreign

matter, rust, etc.

WARNING

If this valve is to be reinstalled into a oxygen cleaned service, the cleaning and

reassembly of this product needs to occur in a clean room environment via

approved procedure.

10.16 Place the body (1) flat, seat retainer side facing down, and support it

on wooden blocks sufficiently above the work surface as to facilitate

insertion of the disc (2) in open position. Assemble disc spacers (9) into

each stem hole counterbore on ID of body (1). Lower the disc (2) into

position, aligning the bores in body (1) and disc (2).

10.17 Insert new stem (3) in the bonnet (33), through the body (1),

bearings (8), disc spacers (9), and disc (2).

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

14 of 18

10.18 Align taper pin holes in disc (2) and stem (3), and install taper pins (23).

Drive pins in tightly with rod or punch until large end of taper pins (23)

sit below disc (2) surface. Tack weld each pin (23) to disc (2) at large

end of pin.

10.19 Install new gasket (7A) on locating plug (6), apply approved thread

lubricant to locating plug (6) threads, and install locating plug in body

(1). Tighten locating plug to the proper torque value given in Table 6.

10.20 Install new stem seals (13), following instructions in “Stem Seal

Replacement” Section 8.

10.21 Install new seat (32), following instructions in “Seat Replacement”

Section 9.

10.22 Remount handle or actuator assembly, and operate valve several times

to verify proper operation. Examine disc (2) and seat for any damage

before reinstalling in line.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

15 of 18

11.0 FIELD ADJUSTMENTS

11.1 Stem Seal Leakage

11.1.1 Should leakage occur at the stem seals, it may be stopped by

retightening the gland retainer nuts to the values specified in Table 4.

NOTICE

Do not overtighten gland nuts, as this may cause increased operating torque and

improper valve operation or closure.

11.1.2 If the leakage cannot be stopped by this action, the stem seals require

replacement.

11.2 Adjusting Valve Closure

11.2.1 Valves with gear actuators or electric/pneumatic actuators may require

adjustment of the travel stops in the actuator to properly close the

valve for tight shut off. The following procedure should be followed

to set travel or limit stops. (It is recommended that the valve must be

removed from line for this procedure.)

NOTICE

The valve has a positive travel stop to ensure valve disc (2) cannot be over

closed.

11.2.2 Loosen the “close actuator” stop screw completely to permit proper disc

(2) positioning. Close the valve until the disc (2) touches the valve body

(1) positive travel stop. Adjust and lock down the close actuator stop

screw while the disc (2) is in this position. Open and close the valve to

visually check that the valve opens and closes to the correct position.

11.2.3 The valve disc (2) is at the full open position when the disc (2) is

perpendicular to the body (1). Set the “open” actuator stop for this

position.

CAUTION

Do not allow the valve to over-open as this may damage the disc seating surfaces

by hitting body (1) or attached piping.

11.2.4 For other power actuators, consult the manufacturer’s instructions for

setting travel stops, as these vary with actuator model and type.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

16 of 18

Table 1: NOMINAL INSIDE DIAMETER OF PIPE

(inches)

Valve Size Schedule

NPS 40 80

33.07 2.90

44.03 3.83

66.07 5.76

8 7.98 7. 63

10 10.02 9.56

12 11.94 11.38

Table 1: NOMINAL INSIDE DIAMETER OF PIPE

(mm)

Valve Size Schedule

DN 40 80

80 78 74

100 102 97

150 154 146

200 203 194

250 255 243

300 303 289

Table 2: MINIMUM INSIDE DIAMETER OF PIPE WITH THE

RECOMMENDED CLEARANCE (inches)

Valve Size Class

NPS 150 300

3 2.86 2.86

43.72 3.72

6 5.88 5.75

8 7.80 7.56

10 9.78 9.44

12 11.74 11.31

Table 2: MINIMUM INSIDE DIAMETER OF PIPE WITH THE

RECOMMENDED CLEARANCE (mm)

Valve Size Class

DN 150 300

80 73 73

100 94 94

150 149 146

200 198 192

250 248 240

300 298 287

Table 3: TOTAL NUMBER OF STEM SEALS

Valve Size Class

NPS DN 150/300

3 80 4

4 100 4

6 150 4

8 200 5

10 250 5

12 300 5

12.0 APPENDIX A - TABLES

NOTES:

1. Minimum I.D. of pipe with recommended clearances (per API 609) have been calculated by adding the minimum I.D. with

zero clearance to a minimum recommended diametric clearance for each pipe size.

2. These tables assume that the pipe is on the body side of the valve and that the pipe is perfectly centered. The seat

retainer side of the valve will always have more clearance than the body side.

3. A minimum of 1/16" thick gasket is used between the pipe flange and valve body face.

4. When using a pipe whose I.D. is smaller than the recommended minimum inside diameter of pipe with adequate clearance,

a chamfer of 45° should be provided on the end of the pipe so that it clears the disc.

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would

violate its proprietary nature without the express written permission of Bray International, Inc.

17 of 18

McCANNALOK CRYOGENIC VALVE

Installation, Operation and Maintenance Manual

Table 4: GLAND RETAINER NUT AND SEAT RETAINER

SCREW TORQUES (Lb-in)

Valve Size Gland Nut Seat Retainer Screws

NPS 150 300 150 300

3 60 60 100 100

4 60 60 175 175

6 80 120 100 175

8 80 140 175 175

10 110 190 175 300

12 130 220 300 300

Table 6: LOCATING PLUG AND MOUNTING BRACKET CAP

SCREW TORQUE (Lb-in)

Valve Size Locating Plug Mounting Bracket Cap Screws

NPS 150 & 300 150 300

3 2520 175 175

4 2520 175 175

62700 300 300

8 3000 300 756

10 4200 756 756

12 4200 756 756

Table 4: GLAND RETAINER NUT AND SEAT RETAINER

SCREW TORQUES (Nm)

Valve Size Gland Nut Seat Retainer Screws

DN 150 300 150 300

80 7 7 11 11

100 7 7 20 20

150 9 14 11 20

200 9 16 20 20

250 12 21 20 34

300 15 25 34 34

Table 6: LOCATING PLUG AND MOUNTING BRACKET CAP

SCREW TORQUE (Nm)

Valve Size Locating Plug Mounting Bracket Cap Screws

DN 150 & 300 150 300

80 285 20 20

100 285 20 20

150 305 34 34

200 339 34 85

250 475 85 85

300 475 85 85

Table 5: DRILL SIZE TO REMOVE TACK WELD

(inches)

Valve Size Class

NPS 150 300

3 .234 15/64 .234 15/64

4 .234 15/64 .234 15/64

6 .234 15/64 .234 15/64

8 .234 15/64 .234 15/64

10 .234 15/64 .234 15/64

12 .234 15/64 .234 15/64

Table 5: DRILL SIZE TO REMOVE TACK WELD

(mm)

Valve Size Class

DN 150 300

80 6 6

100 6 6

150 6 6

200 6 6

250 6 6

300 6 6

HEADQUARTERS

Bray International, Inc.

13333 Westland East Blvd.

Houston, Texas 77041

Tel: +1.281.894.5454

All statements, technical information, and recommendations in this bulletin are for general

use only. Consult Bray representatives or factory for the speciﬁc requirements and material

selection for your intended application. The right to change or modify product design or product

without prior notice is reserved. Patents issued and applied for worldwide.

Bray® is a registered trademark of Bray International, Inc.

SINCE 1986, BRAY HAS PROVIDED FLOW CONTROL SOLUTIONS

FOR A VARIETY OF INDUSTRIES AROUND THE WORLD.

VISIT BRAY.COM TO LEARN MORE ABOUT

BRAY PRODUCTS AND LOCATIONS NEAR YOU.

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Bray High Performance Butterfly Valve McCannalok Cryogenic Owner's manual

Brand: Bray

Model: High Performance Butterfly Valve McCannalok Cryogenic

Category: Motor vehicle accessories & components

Type: Owner's manual

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Bray High Performance Butterfly Valve McCannalok Cryogenic Owner's manual

Bray High Performance Butterfly Valve McCannalok Cryogenic Owner's manual

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